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Note: This sensor can't work alone, it must work with their 433MHz alarm system.

*Wireless 433MHz door sensor, for installed in the door or window to monitor the door/window switch state if it is opened or moved. 
*Simply attach one piece to your door or window, and attach the other piece to the door or window frame.
*High Sensitivity. Excellent design, tiny and fashion. Easily install.
*Ideal intrusion warning for homes, apartments, mobile homes, dorms, offices, hotel rooms, garages, etc.
*Low-consumption chip design, which can make it work long time.

Two status: open and close
Transmission frequency: 433MHz
Action: 15-30 mm
Launch distance: ≥100m (open area)
Standby current: ≤10uA    
​Emission current: ≤15mA 
Operating environment: -10℃-50℃ (14℉-122℉)
Package Size: Approx. 12*8*5cm / 4.7*3.1*2in
Package Weight: Approx. 200g / 7.1oz 

Package List:
1 * 433Mhz Door Sensor

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